# Don't Let Yourself Get Tricked!

Algebra Level 3

I'm sitting in a room at $$20^{\circ}C$$ when all of a sudden it warms to $$40^{\circ}C$$.

What is the percent change, to the nearest integer, in the temperature $$T$$?

Details & Assumptions:

• The formula for percent change between $$x_{1}$$ and $$x_{2}$$ is $$\Delta$$% $$= 100\large{\frac{x_{2}-x_{1}}{x_{1}}}$$.
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